Automatic stop and start for phonographs



May 29, 1923.

P. M. .KREE ET AL AUTOMATIC STOP AND START FOR PHONOGRAPHS Filed Aug. 25 1922 INVENTORS F. .DANTE UIL .uNITEo 135T,-

Patented May 29', 1923.

PAUL M'. Kenn, or new VYVORK.

1\T. YQAN Ennis-Ann Bariu ;oeseenomi cr-snsnyx I res;

AUTOMATIC STOP am) START "FQR'FPH G APHSQ.

Application filed August 25, 1922. Serial nonsense To all whom itmm concern:

TVQ-PAUL M. I REE and, FERNAND DAW, TEUIL,Y;C llIlZQIIS' of the United States, and of the Republic of France, respectively, and residents of of, -Nework, and of tively, have invented anew and Improved Automatic Stop exact description.

Our invention relates to a mechanism-for and stopping the automatically 7 starting movement of a phonograph turn-table and it has reference more particularly to a device comprising an electromagnetic mecha-v operating the brake of a turn-table when the end of arecord groove has been reached," and toLrelease the brake from thenism, for

turn-table when the tone armis moved to the sta-rtingpositionto play'the record,

It is also an object of this invention to provide a devicethat can-easily be attached to any phonograph on the market.

A practical. embodiment similar characters of reference indicate correspondlng parts in all the v ews.

Figure l is a fragmentary top plan view of plan view of. the electromag- Figure 2 is a netic mechanlsm and its housing, the cover ing. o d, showing .the relative posi tion of-the; different parts, 1, and

Figure 4 is an electrical diagram showing the circuits of the device.

Referring to the drawings, 5 is thephonograph cabinet, the motor shaft 6' of. which being only shown as the necessary part for illustrating the invention. The motor shaft 6 carries the customary turmtable 7, which is adapted to receive a record 8. The said" record 8 carries a. metallicxw'asher' 9, which,

the manufactursubsequently, if.

may ,serve as a the city, county, and State -D1m1ont, Bergen =Qounty, and Stateof New Jersey, respecsuitable means 13, whereby it canueasily be and, Start for Phonographs, of-which the following is iafull, clear, and

of our inventionis illustrated in the accompany ng drawings,v forming part of th6 -SpeC1fiCat1011, in which 'vlded with a phonograph equipped with our de- 1; -v1ce, I J

Figure 3'is asection on line 3-3, Figure :18, on the other The lO is attached toa b ar il,

mounted toslide in suitable-bearings 11 provided v1n the housing- 12, of thev magnetic -mechanism. The *housing has attached to the cabinety5 of the, phono-' l I l,45, 2: 36

graph. The bar 11,-carries"aniron platen; I 14, disposed transversely of said bar, and i faced on: each side and 16 respectivelyl by electromagnets :15. The electromagnets 15 serve to .m'o veithe shoe 10 against the" turn-table 7 at the phonograph while'the electr0magnetsj16 act to disengage the shoe-1.10; from the turntable 7'. The platen 14' carries on each side thereof contacts 17 and 18 respectively'f The contactl}? is adapted to engage acorresponding :1 contact member 19, when the 15, as illustrated in Figure2. Thevcontact member 18 is adapted platen 14; is attractedby the electromagnets J,-

.to engage a, cbrre- V A spondlngconta ct member 20 whenthe platen 14 is attracted the eleotromagnets 16, and, as shown in the drawings,; when. the

contacts ,17 and 19 are engaged the 7 contacts '18 and 20 are disengaged, and viceversa.

arm 21 of the phonograph,.is proan extension 22 which may be attached theretoin any suitable way. The, 'said armextendsinto a forlcforined of a- The tone metallicmember 23 and aninsulatingjmember 24, both forming aunlt which 18 mounted on a pivot said pivot being supported on a v suitable bracket 26 extending from-theGabiw net 5.

The contact pointQO is connected bya'suit-t able conductor-27 to vthe motorofthephonograph, and, in consequence to the shaftfiand;

therefore tothe washer 9. ;The contact point hand, connected to "the, electromagnets 15. f The electromagnets1'5 I are in turn connectedto one pole of a battery 3 28, by a conductor 29, other pole of the batter 1 a conduit 30 to the tone- When thenecdle -31 of the reproducerl being connected by arm;

(see "Figure- 4), the.

of the tone arm comes :in contact with the washer 9, a circuit toWrd thQitable 7 and apply the brake; stop. the rotation V to the electromagnets, will be closed, as will'be' seen from Figure 4, and the slide bar 11 will move a he e o of' the turn,-table.l The movement of -.the platen 14L will'disengage the contacts 18 and 20, while the contacts 17 and 19 will be engaged Y It will be remarked that when the tone arm is swinging towards the center of the turn-table, the extension 22 engages the insulating member 24: of the fork. W'hen the tone arm 21 isswung to the outer away from the insulating member 24 to engage the metallic member 28, before the fork will swing on its pivot 25.

The metallic member 23 is connected by a conductor'33, to the contact 19, while the contact 17 is connected to one end of the electromagnets 16 and the other end of said electromagnets is connected to the same pole of the battery to which the electromagnets 15 are connected. As the extension 22 engages the metallic member 23, the circuit is closed to the electromagnets 16, as will be seen from Figure 4, and, in consequence, the slide bar 11 will be drawn away from the turn-table 7 thereby releasing the turntable and permitting the motor of the phonograph to rotate the same.

From the above description it will be seen that our device will automatically stop and start the rotation of the turn-table and that the electric current is only used for a fraction of the movement, when the brake is either applied to or removed fromthe turntable. In other words, a personcannot, by inadvertence, leave the apparatus so that the source of energy could be exhausted and thereby'render the device inoperable.

We claim:

1. In combination with a talking machine having a turn-table. brake means for same and a tone arm having reproducing means. electromagnetic means for moving the brake mechanism to engage the turn-table. electromagnetic means for moving the brake mechanism' away from the turn-table, an open circuit for said electron'iagnetic means, means for closing the circuit to the electromagnetic means for moving the brake away from the turn-table, operable by the outward movement of the tone arm, and means adapted to be provided on a record to be engaged by the reproducing means of the tone arm, to close the circuit to the electromagnetic means for applying the brake to the turn table.

2. In combination with a talking machine having a turn-table, brake means for same, and a tone arm having reproducing means, means for moving the brake away from the turn-table. electromagnetic means for moving the said brake into engagement with the turn-table, an open circuit for said electromagnetic means. an open switch in said circuit, adapted to be closedby said means for moving the brake from the turn-table, and means adapted tobe provided on the record to be engaged by the reproducing means of periphery of the turn-table, theextension 22 will swing an open circuit for said electromagnetic means, an open switch in the circuit of the first electromagnetic means adapted to be closed by said second electromagnetic means, when a current flows therethrough, an open switch in the circuit of the second electromagnetic means adapted to be closed by the first electromagnetic means when a current flows therethrough. means for closing a circuit to the second electroniagnetic means, becoming operable by the outward movement of the tone arm, and means adapted 'to be provided on a record and adapted to be engaged by the reproducing means of the tone arm on its inward movement for closing the circuit to said first electromag netic means, substantially as and for the purposes set forth.

a. In combination with a talking machine having a turn-table, brake means for same and a tone arm having reproducing means, electromagnetic means for moving the brake means into engagement with the turn-table, second electromagnetic means for moving thebrake means away from the turn-table,.

an open circuit for said electromagnetic means, an open switch in the circuit of the first electromagnetic means, adapted to be closed when the second electromagnetic means is energized, an open switch in the open circuit of the second electromagnetic means, adapted to be closed when the first electromagnetic means is energized, a fork having an electroconducting branch and an electroinsulated branch, means carried by the tone arm adapted to engage the said member of the fork, said tonearm and fork being in the open circuit of the second electromagnetic means, and means adapted to be provided on the record to be engaged by the reproducing means of the tone arm to close the circuit to said first electromagnetic means, said means on the record and electroconducting means on the fork being so related that when the reproducing means engage the means on the record, the tone arm is disconnected from the electroconducting member of the fork.

FERNAND DAUTEUIL'. PAUL M. KREE. 

